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/*
* Diff Match and Patch
*
* Copyright 2010 geheimwerk.de.
* http://code.google.com/p/google-diff-match-patch/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: fraser@google.com (Neil Fraser)
* ObjC port: jan@geheimwerk.de (Jan Weiß)
*/
#import "NSString+UriCompatibility.h"
@implementation NSString (UriCompatibility)
/**
* Escape excluding selected chars for compatability with JavaScript's encodeURI.
* This method produces uppercase hex.
*
* @param str The CFStringRef to escape.
* @return The escaped CFStringRef.
*/
- (NSString *)diff_stringByAddingPercentEscapesForEncodeUriCompatibility;
{
CFStringRef urlString = CFURLCreateStringByAddingPercentEscapes(NULL,
(CFStringRef)self,
CFSTR(" !~*'();/?:@&=+$,#"),
NULL,
kCFStringEncodingUTF8);
CFMakeCollectable(urlString);
return [(NSString *)urlString autorelease];
}
/**
* Unescape all percent escapes.
*
* Example: "%3f" -> "?", "%24" -> "$", etc.
*
* @return The unescaped NSString.
*/
- (NSString *)diff_stringByReplacingPercentEscapesForEncodeUriCompatibility;
{
CFStringRef decodedString = CFURLCreateStringByReplacingPercentEscapesUsingEncoding(NULL,
(CFStringRef)self,
CFSTR(""),
kCFStringEncodingUTF8);
CFMakeCollectable(decodedString);
return [(NSString *)decodedString autorelease];
}
@end
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